121220140403031 has 16 divisors (see below), whose sum is σ = 164401415633280. Its totient is φ = 79437658759200.

The previous prime is 121220140402937. The next prime is 121220140403053. The reversal of 121220140403031 is 130304041022121.

It is not a de Polignac number, because 121220140403031 - 2⁹ = 121220140402519 is a prime.

It is a super-3 number, since 3×121220140403031³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 121220140402992 and 121220140403010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220140403071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1439045905 + ... + 1439130138.

It is an arithmetic number, because the mean of its divisors is an integer number (10275088477080).

Almost surely, 2^{121220140403031} is an apocalyptic number.

121220140403031 is a deficient number, since it is larger than the sum of its proper divisors (43181275230249).

121220140403031 is a wasteful number, since it uses less digits than its factorization.

121220140403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878176286.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121220140403031 its reverse (130304041022121), we get a palindrome (251524181425152).

The spelling of 121220140403031 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred forty million, four hundred three thousand, thirty-one".